METHOD OF PROCESS LIQUID PUMPING IN THE WELL AND PLANT FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC E21B43/20 E21B21/00 

FIELD: oil and gas industry.

SUBSTANCE: method contains the process liguid pre-filtering and pumping it into the wellhead. The preliminary cycle of process liquid filtration is carried out directly at the well along the looped scheme until the coarseness level parameters of the contaminating mechanical particles are obtained, the value of which is not more than 5-10 microns. The filters contamination level of filtering lines is controlled according to the pressure differences. The process liquid residues are removed by backwashing. For pumping into the well, the process liquid is forced into the process tank by means of the compressed air. The process liquid is cleaned from contamination both when it comes from the process tank and after it was used as washing liquid of the ground process equipment, pipelines and units.

EFFECT: increase of the well operation efficiency and stability due to the process liquid injection into the well with the controlled level of coarseness.

3 cl, 2 dwg